Crushing-machine.



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G. G. BUCHANAN.

CRUSHING MACHINE.

APPLLGATION NLBD OCT. 3o. 1907, RENEWEDSEPT.2S,1910.

1,029,910,y Patented June 18, 1912.

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- arias anni" @ruilen j. j cIlIAnLEs BUcHANAN, oFBRooKLYN; NEW YORK.

cRUsHrNefii/LACHINE.

Specification ofLettei's Patent.

Application led October 3b, 1907, Serial 1\l'o. `399,88`2.y Renewed September 28, 1910. Serial No. 584,309.

UHANAN; afcitizen of the United States, re-

siding at lBrooklyn, inftlie county of Kings y and State of New York, have invented` cer- .tain new andv useful Improvements in CruS'hingMaChines, of which the following l' isa full, clear, and exact specification.

This invention relates to fcriishing Ina-` chiiies-and has particular reference 'to ani."

improved `frame Vcenstructi'onfals lwelly as iInprovenients in the adjustments for taking up wearl and varying the distance between the: jawsj wherebytlie` positionfof the mov i `able jaw canbe varied by niovingan. abut-` ment block mounted onthe. frame in such manner that .the` crushing Strain is tra-nsmitted Lto-the frame independently of the at-fgitachments` fora holding the block in the frame.` i. i

A further object `of the inven'tionlis to provide a'V onep1ece.frame, preferably of f f cast-.iron or steel, and in conjunction there-jvv g ci'ured in practical use either,byyfreason"y ofi inherent defects in their design orI by crys- .tallization of the metal due tomrapid shocks v and fastenings ,to beibroken. A

drawings, whereinfjjj Figure 1 is a longitudinalcross section of to lwhich .the framesare. subjected, or else the strain causes the toggle block l abutments The-inventionwill be more fully understood in connection with theaCCQmpanying a crushing machine made .according to my invention; Fig. 2 is a plrn view showing i 'the frame; Fig. 3 is acdetail View showing lone of the sliims or liners for adjusting the ,j

i ajaws; and Fig. llisa detail showing a modiflied abutment-Q'for the't-oggle.

1 represents a frame somewhat in the general form of la rectangular j ring having flanges 2 at top'l and bottom and at the crushing end, intermediate flanges 3 extending across the .end and part way along the sides :to the other end, beyond the movable jaw.

The forward end yof the frame is provided with seats in which a vertical reversible fixed jaw 4 is mounted, and at the-top, in-

, teriiiediate the ends in raised standards, are

bearings 5 carrying-a transverse shaft on which the movablejjawfv frame 6 is mounted. This .enables the lower crushingportion of lthejaw ,tohave a: larger movement without .having an, excessive arc. y.The jaw frame 6 swingsfrom the upper endl and, carries a jaw plate 7 which is` also reversible and is l retained in the jaw frame by a wedge r8 and nuts 9L The wear comes principally a't the .lower side of the jaw plate and it is therefore advisable tomount it-so that it can be reversed in order to equalize the wear. The swinging jaw frame 6 is provided with ver- Htical stiiiening ribs 10 and at its lower end has a transversely extending bearing box 11 .carrying a toggle block 12. The ,frame 1'i s :provided with bearing seats 13 inwhich the main shaft 14 is mounted, andlield down byfcapsof the usual construction. The

shaft.lpisprovided with an eccentric 15 @whicli'operates a pitman 16. The lower .end of ytlienpitman 16 also carries bearing blocks'l` onits opposite sides which are #connected toggle plates 17 with the mov- `able4 jaw and the rear end of'the frame. The wear: at the eccentric may be taken up by means :of an adjustable bearing bloclf` 19 and a ,wedgefd 21 is a flywheel, Q2 a driving pulley. l.Connecting the lower end of the movable jaw 6 and a lug at the rear end of the machine,I is arod 26 having a spring 23 normally tending to hold the movable jaw against the toggles and the frame. The toggleblocks'll are each mounted in slots respectivelyin the'iXed jaw, the pitman and the end of the frame, which slots are wider atA the` bottom than at the top and contain lwedge blocks 24 which are pushed outward by screws/ 25 in order to lock the ywedge blocks in their seats.

Another feature of the invention resides iin the construction of the fixed abutment for the actuating toggle at the reary end of the frame, and the means for adjusting the abutment lso asjtovary the distance between the Patented June is', wie.

jaws in, order to crushv dierent sizes of material. The frame 1 adjacent the rear ,end isprovided with lugs :27 projecting to- `ward` each other and having horizontal i1nderfaces,and supported beneath these ,against the rear vertical faceofthe frame by one or more bolts 29. Carried by bolts tenings the Idistance between the block 31 and the overhanging portion of the block 28 is varied by means of shims or liners 32 which are slotted s0 as to-permit withdrawal without removing the bolts 30. To hold the shims against separation an angle plate 33 held by bolts 30 is provided. By removingne or more of the shims or adding others, the block 31 can be moved up or i' 'affecting the angle of the toggle and this| :down and thereby the distance between the jaws' varied and' also theangle-of the toggle ltself. In some instances, it is desirable to vary the distance between the jaws without may be by means of vertical shims or liners 34 which are interposed between the block 28 and the rear side of the frame. By reason of the vertical and horizontal faces of the abutment block, and the interposed liners, the strains come directly on the lugs 27 or on the rear end of the frame, and theibolts merely position -the blocks, Without being themselves subjected to any crushing strains. ,In a machine of this character, the frame is subjected to continual vibration, by reason of the impact of the reciprocating jaw on the material being crushed, and this vibration tends to crystallize the material of the frame and eventually cause it to fracture. In order4 to prevent this, and at the same time to provide a 'firm and practically unyieldable abutment, I interpose between the toggles and the rear end of the frame a cushion or shock absorbing liner 35. As herein shown, this liner is made of one or more layers of wood having the rain crossed to increase the durability and interposed between the two liners 34. It is not essential that this particular arrangement be followed, but it has been found satisfactory in practice. The wood or non-metallic liner prevents the transmission of destruct-ive vibrations to the frame, and thereby prevents crystallization without being resilient and thereby reducing the crushing effect. It will be seen that all of the crushing strain is transmitted through this non-metallic liner. It will also be seen that by this arrangement of parts, no strain is' applied to the bolts themselves, which simply hold the blocks in position, all of the strain-being transmitted by the shims which have a large amount of superficial area. In order to permit the insertion or removal of the liners, a set screw 37 is provided which passes through the block 28. By turning this screw the block 28 can be pushed away from the liners against the tension of spring 23 thus relieving the compression and permitting the liners to be pulled out or others inserted.

The same arrangement may be applied tof' the block 28 so as to' lower the sliding block .31. Fig. 4 shows a modified construction wherein the blocks 28 and 31 are made ina single rectangular block 38 with slots adjacent the ends for receiving theheads of bolts 30 and also the bolts 29. In this form, ,the liners 32,34 and 35 are disposed as before, except that the former come'betweenv the lugs 27"and the edge ofblock 38. All the. strain however, is transmitted directly to the frame, as before.

It is thought that the operation of the machine will be clear from the foregoing description, power being appliedto the shaft 14 and material being fed in-at the top be, tween the movable and fixed jaw.

It will be seen that al1 of the parts sub,- jected to wear are readily renewable', and

also that the shock will be taken up by the frame without injurious vibration. By rea'- son of the sets of vertical and horizontal liners and block surfaces, the distance of the jaws can be quickly'and readily adjusted, without requiring parts which will be subjected to'deterioration in the operation of the machine. The invention is not to be restricted to thel particular construction herein described, since various modifications and changgges'may be made without departingfrom the scope of the invention.

Having thus described my invention, I declare that 'what I claim as new and desire to secure by Letters PateIit`,`is,--.

' 1. In combination wit-h a frame of a crushing machine, an abutment block, means for adjustably supporting said block relaper transverse to the vertical, and an angle plate t for retaining the vlatter shim or shims, crushing means, and means for operating said crushing means and bearing against vsaid .abutmentblock. r

2. In a crushing machine, the combinatior with a frame having sides and front and rear ends about an interior opening, lugs extending from opposite sides ofsaid frame into the interior thereof, a movable crushing jaw mounted on said frame, means for moving said jaw to perform the crushing operation, an abutment block against which said means bears, said block being beneath said lugs and thrust-ing against said lugs and the rear 'end of said frame, said block hav# ing a verticalrear bearing-surface vSo that it may slide vertically on the surface against which it contacts, and one or more'shims interposed between said block and` said lugs, substantially as described.

In a crushing machine, the combination c; 1th a rectangular open frame having y incrlor abutment projections adjacent the li i) 'i'eai end, Aanda vertical face on the rear 'actuatingsaid swinging jaw disposed beot the frame, anadjustable abutment block rear surfaceof between 'one leg of lsaid L shaped bleek: and said frame and shims interposed between said abutment block andthe other leg` of said L shaped block.

5. The combination with a frame of a crushing machine, of an abutment block, an L shaped block interposed between said abute ment block and said fra-Ine, said l.. shaped blockliaving one leg verticaland the other leg horizontal, lugs extending from the sides of said frame, bolts extending through the end of said frame and into lthe vertical leg1 vof said L shaped block, bolts extending through said lugs and into said abut-ment block, shinls between the horizontal leg of said L shaped block and said abutment block and shims between the' Vertical leg of said l3 shaped block and said frame.

In testimony whereof I aix my signature, in presence of two witnesses.

` V CHARLESGr. BUCHANAN Witnesses:

JULiANv S. Woos'nn,

Gno. A. HOFFMAN.

end adjacent and lbelow said projections, of a.4 relatively stationary jaw mounted at the front end of `said frame, an intermediately mounted vswinging jaw, toggle means for tween said swinging jaw and the' rear end engaged bythe yifear end of the toggle and located adjacent said vertical face of the rear end of the frame and belowsaid abutment projections, and shims interposed between the upper surface of 'the block .and 'the interior abutment projections and the the block and the vertical face of the rear end of the frame for independently adjusti g the block and toggle vertically and horizontally.

4. The combination with a frame ,of a crushing machine, of an abutment bloclnan L shaped block interposedbetween said abutment block and said frame, and .means for adjustably supporting saidqabutment block by .said frame comprising shims .interposed 

